Boston police said Saturday that the fatal shootings of three women in a parked car in Dorchester last summer may be related to an earlier crime, as they urged the public to come forward with information.

Sergeant Detective Richard Daley said that the killings last Aug. 12 and the wounding of a fourth woman in the car were not random and “it’s possible” they were connected to a prior incident.

“We’re exploring several avenues, and that is one,” he said.

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Police have previously said that one of the women was targeted, but declined to say which one. The four women — all friends — were shot around 9:22 p.m. after leaving the Dominican Festival in Franklin Park.

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